Quick answers
- Does Elaine Y. Hsiang accept Medicare assignment?
- Yes. Medicare's clinician data says Elaine Y. Hsiang accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Elaine Y. Hsiang see?
- In 2024, CMS data shows 153 Original Medicare patients and 224 services for Elaine Y. Hsiang. This counts Original Medicare only and measures volume, not quality.
- What is Elaine Y. Hsiang's NPI number?
- 1386272979. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Elaine Y. Hsiang, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 153 |
|---|---|
| Services billed to Medicare | 224 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)103 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)38 services
- Emergency department visit with moderate level of medical decision making (99284)19 services
- Critical care, first 30-74 minutes (99291)12 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol63%
- Arthritis40%
- Diabetes33%
- Ischemic heart disease33%
- Atrial fibrillation33%
Hospitals where Elaine Y. Hsiang works
Medicare's Facility Affiliation Data lists Elaine Y. Hsiang at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- California Pacific Medical Center - Mission BernalSan Francisco, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050055
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050047
- Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441
Practice locations
Addresses where Elaine Y. Hsiang is enrolled with Medicare (CMS data updated October 2, 2026).
- 1101 Van Ness AveSan Francisco, CA 94109 (415) 600‑6000
- 300 Pasteur DrStanford, CA 94305 (650) 723‑4000
- 3555 Cesar ChavezSan Francisco, CA 94110 (415) 641‑6625
- 45 Castro StSan Francisco, CA 94114 (415) 600‑0600
Group practices
Medicare enrollment lists Elaine Y. Hsiang as a member of these groups (CMS data updated October 2, 2026).
- Stanford Health Care3,122 clinicians in the group
- San Francisco Emergency Medical Associates75 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Other clinicians in Stanford Health Care
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2020 (6 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386272979 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians